Re: Storing PDF selection
Re: Storing PDF selection
- Subject: Re: Storing PDF selection
- From: Antonio Nunes <email@hidden>
- Date: Sat, 17 May 2008 17:57:14 +0100
On May 17, 2008, at 2:02 PM, Laurent Cerveau wrote:
On May 16, 2008, at 9:11 AM, Antonio Nunes wrote:
You ask the page for a selection for the range you provide, and
assign that to PDFView's current selection:
[somePDFView setCurrentSelection:[yourRememberedPage
selectionForRange:yourRememberedRange]];
Selections can span multiple pages of course, so covering that
requires a bit more work, but it's not difficult.
But the problem here is to get the "yourRememberedRange". Access to
it does not seem to exist on a PDFSelection. As John Calhoun
suggested in another email I tried with rect but this fails also.
I would suggest you try to verify why John's suggestion fails, as one
would expect it to work. Alternatively try this:
Untested:
1. Ask for the bounds of the selection
2. Get the string of the selection
3. Get the string of the page
4. Use rangeOfString:options:range: on the page-string to search for
the selection-string (or you can use an NSScanner, but I think this is
simpler)
5. If you get a match you have a range. Use it to call
selectionForRange: on the page
6. If the bounds of the returned selection match the bounds returned
in step 1 you've found your range. If not continue searching the page-
string until you find the match.
I guess we should file a bug requesting PDFSelections be able to
return their rangeForPage: and also their rangeForDocument or
similarly named method that would yield the range within the full text
of the document.
António
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at the daily miracles of your life,
your pain would not seem less wondrous
than your joy.
--Kahlil Gibran
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